Took ec pill. had very light periods but on the expected date. one week later had irregular bleeding. 2 weeks latr took home preg test negativez preg?

Probably not, but...: If worried, can test one more time after another week. A urine pregnancy test, done correctly, gives a reliable result 3 weeks after sex (3 weeks after when conception might have occurred), or 1 week after missing a period. If done sooner, a positive result is likely real, but a negative result may be due to testing too soon, and thus lead to a repeat test.